[1] J. A. BONDY U. S. R. MURTY: 
Graph Theory with Applications. American Elsevier, New York (1977). 
MR 0411988[2] P. BUNEMAN: 
A characterization of rigid circuit graphs. Discrete Math. 9 (1974), 205-212. 
MR 0357218[3] F. GAVRIL: 
The intersection graphs of subtrees in trees are exactly the chordal graphs. J. Combinatorial Theory Ser. B 16 (1974), 47-56. 
MR 0332541 | 
Zbl 0266.05101[4] M. C. GOLUMBIC: 
Algorithmic Graph Theory and Perfect Graphs. Academic Press, New York (1980). 
MR 0562306 | 
Zbl 0541.05054[5] J. KABELL: 
Intersection graphs: structure and invariants. Ph. D. thesis, University of Michigan (1980). 
MR 2630541[6] J. R. WALTER: 
Representations of rigid cycle graphs. Ph. D. thesis, Wayne State University (1972). 
MR 2622336[7] J. R. WALTER: 
Representations of chordal graphs as subtrees of a tree. J. Graph Theory 2 (1978), 265-267. 
MR 0505894 | 
Zbl 0441.05022